Reversing mechanism



No. 770,602. PATENTED sEPT. 20, 1904.

P. c. MUDD.

REVERSING MECHANISM.

APPLICATION I'IL ED 313.27, 1904.

N0 MODEL.

ATTORNEYS Patented September 20, 1904.

UNITED STATES PATENT OFFICE.

FRANOIES OELENA MUDD, OF ELLISGROVE, ILLINOIS, ASSIGNOR TO HIMSELF, AND FRANCIS A. THOMPSON, OF ST. LOUIS, MISSOURI.

REVERSING MECHANISM.

SPECIFICATION forming part of Letters Patent No. 770,602, dated September 20, 1904:.

Application filed February 2'7, 1904. Serial No. 195,663. (N 5 1,)

To all whom it may concern:

Be it known that I, FRANOIEs OELENA MUDD,

a citizen of the United States, and a resident of Ellisgrove, in the county of Randolph and State of Illinois, have invented a new and Improved Reversing Mechanism,of which thefollowing is a full, clear, and exact description.

The invention relates to eccentrics reversibly mounted on their shafts; and its object is to provide a new and improved reversing mechanism more especially designed for use on locomotive-engines and other engines and machines and arranged to allow convenient reversal of the eccentric at the will of the operator and to protect the working parts against dust, &c., to insure a proper working of the device at all times.

The invention consists of novel features and parts and combinations of the same, as will be more fully described hereinafter and then pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a side elevation of the improvement. Fig. 2 is a sectional plan view of the same on the line 2 2 in Fig. 1'. Fig. 3 is a sectional side elevation of the improvement on the line 3 3v in Fig. 2. Fig. 4 is a transverse section of the same on the line A 4 in Fig. 1. Fig. 5 is a perspective view of part of the casing, and Fig. 6 is aperspective view of one of the wedges for fastening the eccentric-disk to the casing.

On opposite sides of the main or driving shaft A are radially arranged slides B and B, secured by bolts O to a shifting collar D, mounted to slide loosely on the shaft A and engaged by a suitable shifting fork (not shown) under the control of the operator. The slides B and B are provided with bevels B and B", adapted to engage an eccentricdisk E to shift the same transversely relative to the main shaft A for reversing the eccentric, as hereinafter more fully explained. On the eccentric-disk E are mounted in the usual manner eccentric-straps E, connected by an eccentric-rod E with the part to be reversed, and the said eccentric-disk E is provided with an opening E preferably rectangular, as indicated in Fig. 3, to allow longitudinal passage of the slides B and B, so that the oppositely-disposed bevels B and B impart a transverse sliding motion to the disk E when moving the shifting collar D toward or from the eccentric. Each bolt C is provided with two nuts C O screwing against opposite faces of the shifting collar D, to allow lengthwise adjustment of the slides B B to take up wear on the bevels B B The slides B and B are mounted to slide in a suitable guideway formed in a casing made of two sections G and G, disposed on opposite sides of the eccentric, so as to form a protector for the same, and the casing-section G is provided with longitudinally-extending integral flanges G projecting into the opening E of the eccentric-disk E, and between the flanges G and the opposite walls of the opening E are placed wedges H and H, which when drawn up firmly secure the eccentric-disk E to the flanges G and hence to the casing-section G. Each of the wedges H and H is provided with screw-rods I, (see Figs. 5 and 6,) engaging both sections G and G, so as to connect the sections with each other (see dotted lines in Fig. 4E) and to allow of taking up wear on the wedges H H.

When the several parts are in the position illustrated in Figs. 1 and 2, then the shifting collar D is in an outermost position, and-when the operator moves the shifting collar D toward the eccentric then the slide B, by its bevel B acting on the eccentric-disk E, shifts the latter from the right to the left, so as to reverse the position of the eccentric relative to the shaft A, thereby insuring a reversal of the mechanism with which the eccentric is connected. It is understood that when the shifting collar D is moved forward, as described, the bevel B of the slide B allows shifting of the eccentric-disk E from the right to the left, and when it is desired to return the eccentric E to its former position then the operator moves the collar D outward, so that the bevel B of the slide B acts on the eccentric-disk E to shift the same from the left to the right, the bevel B on the other slide, B, permitting such movement.

The casing-sections G and G are secured by screws G3 or other means to the shaft A, and consequently when the latter is rotated the casing carries the eccentric-disk E around, as the latter is fastened to the flanges G by the wedges H and H, as previously described.

By the arrangement described the slides B and B are relieved of all strain, especially as the casing is the medium for turning the cocentric-disk with the shaft A, as above explained.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. A reversing mechanism for engines and the like, comprising an eccentric having an eccentric-disk provided with an opening for the loose passage of a driving-shaft, a casing mounted to turn with the shaft and carrying said eccentric-disk, members arranged within the casing and extending through said disk to take up wear therein, and manually-controlled slides having bevels and mounted to slide in the casing on opposite sides of said shaft for engaging the eccentric-disk to shift the latter transversely relative to the said shaft, as set forth. 5

2. A reversing mechanism for engines and y the like, comprising an eccentric having an eccentric-disk provided with an opening for the loose passage of the driving-shaft, a casing mounted to turn with the said shaft and made in sections arranged on opposite faces of the eccentric, the sections being connected with each other by way of the said opening,

one of the sections having integral flanges extending into the said opening and Wedges interposed between the outer sides of the said flanges and the opposite walls of the opening in the said disk, to lock the latter in place on the casing, for the eccentric-disk to rotate with the casing and the shaft, and manuallycontrolled slides having'bevels and mounted to slide in the said casing, on opposite sides of the said shaft, the slides engaging the said eccentric-disk for shifting the latter transversely relative to the shaft, as set forth.

3. The combination in a reversing mechanism for engines and the like, of a casing mounted to turn with the driving-shaft and made in sections, an eccentric mounted on the shaft between said casing-sections, connections for said sections extending through an opening in the disk of the eccentric, members also extending through the opening to take up Wear within the disk, and manually-controlled slides having bevels mounted to move in the said casing on opposite sides of the driving-shaft for engaging the eccentric-disk to shift the latter transversely relative to the said shaft, as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

FRANCIES GELENA MUDD.

Witnesses:

LOUIS M. SPURGEON, WM. LUTHER SrURenoN. 

